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This study found that increased hair cortisol levels, indicating stress, were associated with greater hair loss in captive rhesus macaques, although the causality of this relationship remains unclear.

In this study, hair from forearms showed higher cortisol levels than hair from lower legs, suggesting a localized cortisol response in hair.

This presentation reviews recent discoveries about signaling mechanisms in hair follicles and their potential influence on hair cycle control and melanogenesis, without presenting new experimental results.

This study found that finasteride impaired stress reactivity and reduced exploratory and impulsive behaviors in rats, potentially by altering the hypothalamus-pituitary-adrenal axis function.

This study observed that Parkinson’s disease patients had higher hair cortisone, but not cortisol, levels compared to controls, and cortisone was significantly associated with mood-related non-motor symptoms.

This study reported that a novel trilayer electrospinning wound dressing can improve the wound microenvironment and accelerate repair in abdominal wall defects by facilitating directional biofluid transport and reducing inflammation.

This review discusses the interplay between dermatology and psychology in psychodermatology, highlighting the impact of neuroendocrine stress pathways on skin diseases and the importance of considering skin of color.

This study found that age-related fluctuations in hormones and endocannabinoids in male C57BL/6 mice showed specific patterns, with peak values observed around 2.7 to 3.4 months, with these patterns seen in both plasma and hair but with different magnitudes.

This study found that stress hormones, particularly CRF, can inhibit hair growth and induce hair loss by affecting human dermal papilla cells and hair follicles, suggesting a functional HPA axis in these cells.

This study found no significant differences in lectinhistochemical characteristics of the dorsal skin epidermis between hypotrichotic WBN/Ila-Ht rats and Wistar rats, except for varying lectin binding intensity.

This article discusses the association of stressful life events with alopecia areata and their effects on patients' psychosocial outcomes, but it reports no new empirical findings.

This study concluded that qiviut cortisol can be used as a measure of HPA axis activity in muskoxen, with hair growth phase and body region affecting cortisol levels.

Alopecia areata may involve stress-related changes affecting hormone receptors, leading to reduced cortisol production.

This study found that chronic stress may inhibit hair follicle growth and melanogenesis in mice through modulation of the central HPA axis, with C57BL/6 mice appearing most sensitive to these effects.

In this study, plasma levels of MSH and cortisol in patients with alopecia areata did not show significant changes compared to healthy controls.

This review summarizes the association between 5-alpha reductase inhibitors and depression, discussing potential mechanisms such as neuroactive steroid alterations and neuroinflammation, but reports no new clinical results.

This study found that blocking neurosteroid synthesis in pregnant sheep increased HPA axis activity, particularly under stress, suggesting neurosteroids help modulate stress response.

This study discusses hormonal changes in gastroesophageal reflux disease that may affect sebaceous gland secretion but does not report new clinical results, suggesting a need for collaborative research in gastroenterology and dermatology.

This case series reported incidents of iatrogenic Cushing's Syndrome linked to high doses of intralesional corticosteroid injections and mesotherapy regimens, highlighting the need for cautious prescription practices and further research on mesotherapy safety.

This study found that women with PCOS had significantly higher hair cortisol concentrations, suggesting hyperactivation of the HPA axis may affect metabolic and inflammatory markers in those with elevated cortisol levels.

This article reviews how the skin's peripheral stress response system mirrors the central HPA axis, facilitating local homeostasis under stress, but presents no new findings.

This study found that higher levels of cortisol (F) and cortisone (E) in hair before stroke onset were significantly associated with post-stroke depression and anxiety, suggesting they could serve as potential predictors for these mood disorders.

This study explores the potential of adaptogenic herbal extracts like ashwagandha, rhodiola, and schisandra in treating stress-induced dermatoses, noting their effects on modulating the HPA axis, reducing inflammation, and improving skin barrier function.

This study found a partial positive association between adulthood stressor exposure and hair cortisol levels, but noted inconsistent results across two studies, reflecting variability seen in previous research.

This review highlights the role of the brain–gut–skin axis in systemic inflammatory skin conditions, revealing potential interventions like microbiome-directed treatments and integrative therapies, though emphasizes the need for more robust clinical validation.

This review reports that alopecia, particularly alopecia areata, significantly impacts mental health and quality of life through stress and immune mechanisms, with treatments like Janus kinase inhibitors showing promise for improving both hair regrowth and psychological well-being.

This review found significant psychosocial impacts of alopecia, noting that those with alopecia, particularly alopecia areata, experience higher rates of depression and anxiety. The review also highlighted new treatments like Janus kinase inhibitors that improve both hair regrowth and quality of life.

This integrative literature review revealed that chronic stress, characterized by elevated cortisol levels, negatively impacts hair follicle integrity and contributes to alopecia by promoting the premature transition from the growth phase to the resting phase of the hair cycle.

This study found that individuals with a recent history of suicide attempts exhibited altered DHEA hair levels, suggesting possible dysregulation of the HPA axis as a biopsychosocial feature, and recommends further investigation into hair hormones as potential markers of suicidal crisis and vulnerability.

This case series highlights the risk of iatrogenic Cushing syndrome and adrenal insufficiency among immigrant patients using over-the-counter medications from other countries, which often contain hidden glucocorticoids marketed as vitamins, prompting clinicians to perform thorough medication histories for accurate diagnosis and management.